Type Alias: BeforeToolHook

type BeforeToolHook = (context) => 
  | undefined
  | Promise<undefined>
  | BeforeToolHookResult
| Promise<BeforeToolHookResult>;

Defined in: hooks/types.ts:259

Hook called before tool execution (after permissions and guardrails).

Can be used for:

• Custom validation
• Input transformation
• Execution mocking for tests
• Rate limiting

Parameters

Parameter	Type
context	ToolHookContext

Returns

| undefined | Promise<undefined> | BeforeToolHookResult | Promise<BeforeToolHookResult>

void to proceed, or skip/modify options